2. Also, if I put it in as userscript, how do I get it to say something in game?

3. Also, is it possible to change it so everything you write in chat automatically appears at system text?

1. i forgot a question mark in ma answer right behind tested but they look working

2. those he provided are just functions so you have to call these functions like if you want to let sth appear like it was an system text (3) put the code he provided in the userscript and add the line at the bottom with: